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Magnetocaloric effect in La0.75Sr0.25MnO3 manganite |
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| Authors: | M. P?ka?a K. P?ka?a J.F. Fagnard |
| Affiliation: | a Department of Chemistry, University of Warsaw, Al. Zwirki i Wigury 101, PL-02-089 Warsaw, Poland b Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland c Center for the Study of Matter at Extreme Conditions, Florida International University, Miami, FL 33199, USA d Montefiore Electricity Institute, University of Liege, 4000 Liege, Belgium |
| Abstract: | The polycrystalline manganite La0.75Sr0.25MnO3 prepared by an alternative carbonate precipitation route reveals the rhombohedral perovskite structure. Magnetization isotherms measured up to 2 T are used to determine Curie temperature of 332 K by means of Arrott plot. Maximum of magnetic entropy change is found at Curie temperature. The relative cooling power equal to 64 J/kg for 1.5 T magnetic field, is superior as compared to the manganite with the same chemical composition from the sol-gel method. |
| Keywords: | Magnetocaloric effect Magnetic refrigeration Manganite Curie temperature Arrott plot |
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